Roger Waters at the O2, SE10

Is Pink Floyd’s The Wall the pinnacle of rock achievement, or a monument to a rock star’s twisted ego? It’s both, which is why Roger Waters’ exposition of his inner torments retains its power. 29 years had passed since Waters last presented his vision to a London audience, but despite technological innovations leading to greater spectacles, not a great deal had changed: this was a faithful rendition of an album that wears its themes of adolescent alienation on its sleeve.